diff --git a/src/disc_86f.c b/src/disc_86f.c
index 0be409ea7..e4d4c69b8 100644
--- a/src/disc_86f.c
+++ b/src/disc_86f.c
@@ -67,6 +67,7 @@ static struct
         uint8_t track_data[2][50000];
         uint8_t track_layout[2][50000];
         uint8_t track_flags;
+        uint8_t side_flags[2];
 	uint8_t track_in_file;
         uint32_t track_offset[256];
 	uint32_t file_size;